From: Peter Coppens <pgp.coppens@pandora.be>

Date: Fri, 19 Dec 2003 16:36:44 +0100

To: <www-ql@w3.org>

Message-Id: <20031219153645.36A53144EC@dr-nick.w3.org>

Date: Fri, 19 Dec 2003 16:36:44 +0100

To: <www-ql@w3.org>

Message-Id: <20031219153645.36A53144EC@dr-nick.w3.org>

All, Looking at the XQuery spec, I am somewhat surprised by the consequences of the precedence rules for QuantifiedExpr - OrExpr and AndExpr What I mean is: Take the query for $x in (1,2,3) where some $y in (1,2) satisfies 1 = $y and $y = 1 return $x Which, I think, is equivalent to for $x in (1,2,3) where some $y in (1,2) satisfies (1 = $y and $y = 1) return $x But now take the query for $x in (1,2,3) where some $y in (1,2) satisfies 1 = $y or $y = 1 return $x Which, I think, is equivalent to for $x in (1,2,3) where (some $y in (1,2) satisfies 1 = $y) or $y = 1 return $x I find that rather confusing. So I guess I have the following questions (1) is the above interpretation correct? (2) is this a deliberate choice and if yes, are there any motivations for that decision that can be shared? (3) would it not be possible to add an extra level of precendence where the OrExpr comes to sit between QuantifiedExpr and AndExpr, or would that propagate to have other side effects? Thanks, PeterReceived on Friday, 19 December 2003 10:49:19 UTC

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